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LF: OT: More solar power for my remote receiver

To: "[email protected]" <[email protected]>
Subject: LF: OT: More solar power for my remote receiver
From: DK7FC <[email protected]>
Date: Sun, 17 May 2015 00:46:15 +0200
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Hi all,

Yesterday i've installed a second solar module to my remote receiver in my garden, which is currently running as a MF station: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_Grabber.html It is a 50 Wp module that is now parallel to the 20 Wp module. Meanwhile the battery capacity was increased to 3 x 7 Ah. And some branches were removed. Despite a more or less overcast day and a permanent current consumption of 240 mA by the Raspi+Receiver, i got enough energy input to reach the upper battery voltage limit near 14V, which causes the regulator to interrupt the charging. So this is a good sign. The goal is to reach a availability as high as possible, even in winter and bad WX. Most likely i have to increase the battery capacity for that. But i will continue in steps :-) For the installations i extra bought a climbing gear, which allows to operate into the tree with both hands in 15 m AGL.
Some crazy images at
https://www.dropbox.com/sh/qx0na18bycukuz8/AAAms8Ne-O_3_A6uiuPf9DVca?dl=0


73, Stefan

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